Three-hour film will chronicle the rise, career and legacy of legendary rock group The Eagles

Showtime has acquired the Alex Gibney documentary "History of the Eagles," and will air the documentary about the legendary rock group on Feb. 15 and 16, the network announced Saturday at Sundance.

The film, produced by Gibney and directed by Alison Ellwood ("Enron: The Smartest Guys in the Room"), "History of the Eagles" will debut its first two hours on Feb. 15 at 8 p.m., and its third and final hour Feb. 16 at 8 p.m. Part One of the documentary makes its premiere at the Sundance Film Festival on Saturday.

The film promises an "inside look into the history of the band and the legacy of the music," for which the filmmakers received "unprecedented access," Showtime said.

The first part of the film chronicles the group's rise to super stardom in the '70s through its breakup in 1980, using interviews from all current and former band members, along with related artists Jackson Browne and Linda Ronstadt, as well as previously unreleased home movies and archival footage.

The second part of the film will pick up in the '80s, exploring the impact that the group's legacy made on the music scene.

Amassing more than 120 million album sales worldwide, The Eagles — whose members have included Don Henley, Glenn Frey and Joe Walsh, among others — racked up numerous hits throughout the group's career, including "Hotel California," "Witchy Woman" and "Life in the Fast Lane."